dictionary={"if":'做判断',
	'and':'相当于并且',
	'or':'相当于或者',
	'for':'循环',
	'as':'改名',
	'aaa':'ad'
	}
print(dictionary)
# ~ dictionary['adfaw']=3
print(dictionary)
del dictionary['aaa']
print(dictionary)
print("if 的作用是："+dictionary['if'])
print("and 的作用是："+dictionary['and'])
print("or 的作用是："+dictionary['or'])
print("for 的作用是："+dictionary['for'])
print("as 的作用是："+dictionary['as'])
print('\n')

for a,b in dictionary.items():
	print(a+"的作用："+b)
